Manually operated toggle acting switch having a job function lever

ABSTRACT

A manually operated switch having a toggle mechanism which applies positive pressure between the contacts of the switch during the interval the toggle levers are passing through the toggle centerline. The switch includes a jog function lever which is selectively movable between an operative position which will cause the levers of the toggle mechanism to return with a snap toggle action from a position which causes the contacts of the switch to be closed to a position wherein the contacts of the switch are open when a manual force on the ON button or lever is removed when the jog function lever is at one position and which will permit the toggle mechanism to move and remain in the position whereat the contact of the switch remain closed after the manual force which is used to actuate the ON button or lever is removed.

United States Patent (72] Inventor Jordan F. Puetz 3,155,803 11/1964Klein et al 200/153 Milwaukee, Wis. 3,349,208 10/1967 Cataldo et a1.200/153 [2]] Appl. No. 9,205 3,430,014 2/1969 Walters 200/144 [22] Filed1970 Primary ExaminerMilton O. Hlrshfield [45] Patented July AssistantExaminer R S Skudy [73] Asslgnee ggl z g sfmf Attorneys-Harold .1.Rathbun and William H. Schmeling [54] MANUALLY OPERATED TOGGLE ACTINGABSTRdCT: manually operated switch having a toggle swn-C HAVING A JOBFUNCTION LEVER mechanism which applies positive pressure between thecon- 7Claims summing at tacts of the switch during the interval thetoggle levers are passing through the toggle centerlme. The switchincludes a 1 Zoo/153i jog function lever which is selectively movablebetween an 200/71'335/2512O0/72 operative position which will cause thelevers of the toggle [5i 11". Cl H0"! mechanism to return with a snaptoggle action from a position Fleld Of Search cause the contacts of thewitch to be closed to a posi. 1 72, 153-7, 169 335/25 tion wherein thecontacts of the switch are open when a References Cited manual force onthe ON button or lever is removed when the jog function lever is at oneposition and which will permit the UNITED STATES PATENTS togglemechanism to move and remain in the position whereat 3,032,624 5/1962Gribble et al. 200/71 the contact of the switch remain closed after themanual force 3,067,307 12/1962 Ramath 200/150 which is used to actuatethe ON button or lever is removed.

PATENTEU JUL SIB?! 3,591 745 has 2 v sol2 #0 62 FIG I n 36 29 3 32 5o Q28 2 e0 2 INVIZNI'OR.

JORDAN F. PUETZ MANUALLY OPERATED TOGGLE ACTING SWITCH HAVING A JOBFUNCTION LEVER This invention relates to an electric switch and is moreparticularly concerned with an arrangement which will provide a manuallyoperated switch, such as a manually operable motor starter, with a jogfunction.

Switches known as manually operated motor starters are frequently usedin unsophisticated circuits to control the energization of electricmotors, electromagnetic clutches and the like from a single controlstation. On occasion it has been found desirable that switches, known asmanually operated starters, be provided with an arrangement which willpermit the contacts of the switch to be rapidly moved to a circuitclosing position and a circuit opening position so that the apparatuspowered by the motor or clutch may be inched. An example of an inchingoperation which is frequently encountered is the adjustment and settingof the height of the dies in a metal press in which the movement of theworking members of the apparatus must be executed in controlled shortincrements to accurately position the dies in the press during setup.The jog function lever, as incorporated into the manual starteraccording to the present invention, is arranged so that when the leveris at one position it will not interfere with the operation of theswitching function of the starter and when positioned in anotherposition it will automatically return the toggle mechanism of the switchand the contact carrier to a circuit opening position when the manualforce on the start button is removed.

It is an object of the present invention to provide a manually operatedelectric switch that has a toggle-lever type actuating mechanism with alever arrangement that will automatically move the levers of the togglemechanism from an actuated position to a deactuated position when amanual force required to move the toggle levers to the actuated positionis removed.

A further object is to provide a manually operated switch with a leverarrangement which will provide the switch with a jog function when thelever is selectively positioned at an operative position and without ajog function when the lever is selectively positioned in an inoperativeposition.

An additional object is to provide a manually operated motor starterwith a lever arrangement that is included within the housing for theswitch and arranged so the switch may be programmed to provide a jogfunction when the lever is at one selected position in the switchhousing and without a jog function when the lever is positioned in asecond position in the switch housing.

Another object is to provide a manually operated switch, such as amanually operated starter, with a housing that provides an enclosure fora movable contact carrier, a toggle lever mechanism for moving thecarrier between a contact opening and a contact closing position and alever which may be selectively moved from an inoperative position to anoperative position wherein the levers of the toggle mechanism areautomatically moved from a position wherein the movable contacts of theswitch, that are supported by the carrier, are in a circuit closingposition to a position wherein the contacts are in a circuit openingposition when a manual force required to move the levers of the togglemechanism to the circuit closing position is removed.

A still further object is to provide a manually operated switch, such asa manually operated starter, with a housing that provides an enclosurefor a movable contact carrier, a toggle lever mechanism that is arrangedto move contacts carried by the carrier to a circuit closing positionand to a circuit opening position with stationary contacts of the switchwhen the toggle mechanism is in an actuated and a deactuated positionand means including a lever which may be selectively moved from aninoperative position to an operative position to provide the switch witha jog function when the lever is at its operative position and toprovide the lever with a portion which will prevent movement of thelever to its operative position when the levers of the toggle mechanismare in the activated position.

Another object is to provide a manually operated starter, with a housingthat provides an enclosure for a movable contact carrier, a toggle levermechanism that is arranged to be actuated manually from the exterior ofthe housing to move and maintain the contacts carried by the carrier ina circuit opening position and a circuit closing position withstationary contacts of the switch when the toggle mechanism is manuallymoved from a deactivated position to an activated position and a meansto provide the switch with a jog function with said means including amain lever having a portion pivoted within the housing and a portionextending externally of the housing so that the portions of the leverwithin the housing may be selectively moved to two positions within thehousing, a return lever pivotally on a portion of the main lever withthe housing to have a portion engageable with a portion of an operatinglever of the toggle mechanism and a spring biasing the return lever sothat the operating lever is moved by the return lever to position thetoggle mechanism in the deactivated position when a manual force whichpositions the operating lever of the toggle mechanism in the activatedposition is removed.

Further objects and features of the invention will be readily apparentto those skilled in the art from the specification and appended drawingillustrating certain preferred embodiments in which:

FIG. I is a side view partly in cross section of a manually operatedelectric switch incorporating the features of the present invention.

FIG. 2 is a top end view partly in cross section taken along a line 2-2in FIG. 1 illustrating a lever arrangement, which provides the switchwith the jog function, in an operative position.

FIG. 3 is a view partly in cross section illustrating the leverarrangement in FIG. 2 in an inoperative position.

FIG. 4 is a diagrammatic view illustrating the position of the togglemechanism of the switch and the jog lever arrangement in an operativeposition when the ON button of the switch is depressed.

FIG. 5 is a diagrammatic view of the toggle mechanism of the switch andthe jog lever arrangement when the jog lever is in an inoperativeposition and the OFF-RESET button of the switch is depressed.

The switch 10, as shown in the drawing, includes an upper section 12, alower section 14 which are secured together to form the housing 16. Theswitch 10 is more fully described in an application for U.S. Pat. Ser.No. 9203, which has been filed by the inventor .lordan F. Puetzconcurrently herewith and has been assigned to the assignee of thepresent application. As disclosed in the Puetz application, the lowersection 14 is arranged to be mounted on a vertical panel (now shown) andincludes a portion 18 that is suitably compartmented and includes meanswhich will respond to an excess current flow through a circuit to bemonitored. The particular means includes three melting alloy typecurrent responsive elements, each of which is positioned in acompartment and includes a solder-type current responsive unit that hasa heater element connected in series with a circuit to be monitored anda ratchet wheel which is normally held stationary when the current flowthrough the heating element does not exceed a preselected value andwhich is released to rotate upon excessive current flow through theunit. The release of the ratchet wheels will cause any one of theplurality of sliders (not shown) to move in the portion 18 and therebymove a lever 20 in a clockwise direction of rotation about a pivot 22.The movement of the lever 20 causes a slider 24 to move upwardly in FIG.1 to cause a disengagement between a hook 26 and a hook 28 so that atoggle mechanism 30 within a cavity 32 in the upper section 12 isreleased and moves to a tripped position. Also included within thecavity 32 is a movable contact carrier 34, and a lever means 36 whichwill provide the switch It) with ajog function, as will be hereinafterdescribed.

The movable contact carrier 34 is suitably guided by portions of theupper section 12 to move in a linear path along an axis 38 within thecavity 32 between a position wherein movable contacts 40, carried by themovable contact carrier 34, are disengaged from stationary contacts 42of the switch 10 to a position wherein the movable contacts 40 bridgethe stationary contacts 42 when the contact carrier 34 is moved to theposition shown in FIG. 1 by the toggle mechanism 30 against the force ofsuitable springs, not shown, which react upon a stabilizing bar 44 in amanner described in the Puetz application. The toggle mechanism 30includes a toggle lever 46, an operating lever 48, a trip lever 50, atoggle spring 52, a toggle latch lever 54, a latch lever spring 56, atrip lever latch that includes the hook 26 and a means for moving theoperating lever 48, which in the embodiment shown, includes an OFF-RESET button 60 and an ON button 62. The upper section 12 provides asupport for a main pivot 64 of the toggle mechanism 30.

The operating lever 48 and the trip lever 50 are rotatable about themain pivot 64 and have arm portions extending in opposite directionsfrom the pivot .64. The portion of the trip lever 50 extending to theleft of the pivot 64 in FIG. I carries the hook 28. The portion of thetrip lever 50 extending to the right of the main pivot 64 includes anauxiliary pivot 66. The operating lever 48, which has arm portionsextending in opposite directions from the main pivot 64, has a pin 68secured on an end of the arm portion extending to the right of the pivot64 and a pin 70 secured on the end of the arm portion extending to theleft of the main pivot'64.The OFF-RESET button 60 and the ON button 62are respectively secured through a slotted connection, not shown, withpins 72 and 74 that are respectively carried on the arm portion of theoperating lever 48 to the left and right of the main pivot 64 so thatthe buttons 60 and 62, which are suitably guided for vertical movementby portions of the upper section 12, will cause the operating lever tomove in a clockwise direction when the ON button 62 is depressed and ina counterclockwise direction of rotation when the OFF button 60 isdepressed.

The operation of the toggle mechanism 30 is as follows. The

levers of the toggle mechanism 30 are shown in the OFF- RESET conditionin FIG. wherein engagement between the hooks 26 and 28 causes a spring,not shown, to be compressed and maintains the trip lever 50 against aclockwise rotation and positions the lever 50 so that the auxiliarypivot 66 is located above a centerline indicated by a broken line 76which extends through the main pivot 64. The button 60, which has beenpreviously depressed, positions the operating lever 48 so the pivot pin68 is located above the centerline 76. The toggle spring 52 has itsopposite ends connected between the pin 68 and a pin 78 that is carriedon the end of an arm portion of the toggle lever 46 on the left side ofthe pivot 64. The position of the pin 68 above the centerline 76 causesa line of centers between the pins 68 and 78 to be disposed above thecenterline 76 so that the toggle spring 52 causes toggle lever 46 to bepositioned on the auxiliary pivot 66 so that the pin 78 is above thecenterline 76 and an actuating portion 80 on the toggle lever 46 to bepositioned so that the movable contact carrier 34 is moved forwardly inthe base by springs to a position wherein the movable contacts 40 areseparated from the stationary contacts 42. When the toggle mechanism isin the OFF position, a stop carried by the toggle lever 46 engages anupper edge on the trip lever 50 to prevent further movement of thetoggle lever 46 and the operating lever 48 by the toggle spring 52.

The toggle mechanism 30 is moved from the OFF-RESET position shown inFIG. 5 to the ON position shown in FIGS. 1 and 4, by depressing theoperating button 62. The depression of the button 62 causes theoperating lever 48 to rotate about the pivot 64 in a clockwise directionso that the pivot pin 68 is positioned beneath the centerline 76 whichcauses the line of centers between the pin 68 and the pin 78 to bedisposed beneath the center pivot 64 whereby the toggle spring 52 causesthe toggle lever 46 to rotate about the auxiliary pivot 66 and positionthe pin 68 below the centerline 76. The movement of the toggle lever 46causes the actuating portion 80 to move toward the lower section 14 sothat the movable contact carrier 34 moves and causes the movablecontacts 40 to engage the stationary contacts 42 with a firm engagementas the movable contacts 40 compress the springs which engage the movablecontacts 40. The movement of the levers of the toggle mechanism 30 whenpositioned in the ON position is limited by a stop that is carried bythe trip lever 50 which engages an upper surface portion on the togglelever 46.

In the event of an excess current flow through any one or all of theoverload elements in the portion 18, the levers of the toggle mechanism30 will automatically move to the TRIP position as follows. When thetoggle mechanism 30 is positioned in the ON position, the spring, notshown, which biases the TRIP lever in a clockwise direction of rotation,will be compressed, pins 68 and 78 will be located below the centerline76, and the auxiliary pivot 66 will be positioned above the centerline76. The contact carrier 34 is positioned by the portion 80 so that thestationary contacts 42 are bridged by the movable contacts 40. An excesscurrent through any one or all of the overload elements will release theratchet wheels, thereby releasing the sliders within the portion I8 sothe sliders move forwardly. The forward movement of the released sliderswill cause the lever 20 to rotate about its pivot 22 and the slider 24to be moved forwardly. The slider 24 has a portion engaging a portion ofthe lever which carries a hook 26 so that the forward motion of theslider 24 through a camming action causes the hook 26 to rotateclockwise and release the hook 28. The release of the hook 28 permitsthe TRIP lever 50 to rotate in a clockwise direction to a TRIPPEDposition. During the rotation of the TRIP lever 50 to the TRIPPEDposition, theauxiliary pivot 66 will pass through a line of centersbetween the pins 68 and 78 to a position below the centerline 76. Themovement of the auxiliary pivot 66 to the TRIPPED position causes thetoggle spring 52 to supply a force which rotates the toggle lever 46 ina clockwise direction and the operating lever 48 to rotate in acounterclockwise direction to a neutral position wherein the position ofthe operating lever 48 will cause the buttons and 62 to be positioned sothattheir top surfaces are aligned in a single plane and visuallyindicate from the exterior of the switch 10 that the components of theswitch 10 have responded to an overload condition. Also, when the togglemechanism is in an over: load position, the portion 80 will be in afully retracted position so that the contact carrier 34 is movedupwardly to a position wherein the movable contacts 40 are separatedfrom the stationary contacts 42.

The toggle latch lever 54 comprises a U-shaped member having a pair ofarms pivotally mounted on members forming the trip lever 50. The arms ofthe latch lever 54 are interconnected by a bright portion 82. The lever54 has a surface 84 which is engaged by a portion 86 on the operatinglever 48 when the operating lever 48 is moved to the OFF position and aportion that is engaged by a portion, not shown, on the member whichcarries the hook 26.when the member rotates in a clockwise directionwhen one of the overload elements within portion 18 responds to anexcess current flow. The toggle latch lever spring 56 surrounds thepivot for the lever 54 and constantly urges the latch lever 54 in aclockwise direction of rotation in FIG. 1.

The operation of the toggle latch lever 54 will now be described. Whenthe levers of the toggle mechanism 30 are in the OFF position, theportion 86 of the operating lever 48 will engage the surface 84 and movethe latch lever 54 in a counterclockwise direction so that the brightportion 82 is out of engagement with the hook on the toggle lever 46.When the levers of the toggle mechanism 30 are in the ON position, theoperating lever 48 will be separated from the surface 84 on the latchlever 54 so the latch lever spring 56 will rotate the latch lever 54 inthe clockwise direction to a position wherein the bright portion 82 isengageable with a hook on the toggle lever 46. When the button 60 isdepressed to move the operating lever 48 from the ON position to the OFFposition, the bight portion 82 will be maintained in engagement with thehook on the toggle lever 46 until the line of centers between the pins68 and 78 has passed a predetermined distance above the axis of thepivot 64 before the portion 86 engages the surface 84 so the contactcarrier 34 will be maintained in a position wherein the movable contacts40 are in tight engagement with the stationary contacts 42 and positivepressure is maintained by the movable contacts 40 and stationarycontacts 42 as the toggle mechanism 30 passes through a line of togglecenters which would otherwise provide zero pressure between the movableand stationary contacts. When the components of the switch respond to anoverload condition, as has been previously described, which causes thehook 26 to rotate in a clockwise direction, a portion of the levercarrying the hook 26 is arranged to engage a portion 90 to rotate thelever 54 in a counterclockwise direction to release the engagementbetween the bight portion 82 and the hook on the toggle lever 46 so thatthe toggle lever 46 is free to rotate in a clockwise direction to theTRIPPED position, as has been previously described.

After the switch 10 has responded to an overload current condition, thecomponents of the switch may be restored to the OFF-RESET position asfollows. As previously indicated, the switch 10 will respond to anoverload current condition and cause the buttons 60 and 62 to bealigned. The depression of the OFF-RESET button 60 from its alignedposition with the button 62 will cause the operating lever 48 to rotatein a counterclockwise direction and cause a pin 70 to engage the uppersurface of the trip lever 50 and move the trip lever 50 in acounterclockwise direction of rotation to the RESET position. The lever48 has portions thereon which are arranged to engage portions on theslider 24 and move the slider 24 when the lever 48 rotates in acounterclockwise direction. A portion on the slider 24 will thuscause'the lever to rotate counterclockwise and the sliders within theportion 18 to move to a position wherein latch portions on the slidersare positioned to engage the teeth of the ratchet wheels. In the eventthe solder in all of the overload elements within the portion 18 hasbeen solidified so that the ratchet wheels will no longer be free torotate, the lever 20 willbe maintained in its RESET position so that aspring, not shown, will move the lever carrying the hook 26 to aposition which will permit the hook 26 to engage the hook 28 andmaintain the trip lever 50in the RESET position, as previouslydescribed. In event the ratchet wheels are not held fixed, as may becaused when the device is prematurely reset, the release of theoperating OFF-RESET button 60 will cause the sliders within the portion18 to move the lever 20 and the slider 24 as previously described. Thusthe switch 10 will have a trip-free operation.

Thus the switch 10 as described will maintain a positive pressurebetween the switching contacts during the interval the levers of thetoggle mechanism are passing through positions which would otherwiseprovide a zero output force on the movable contact carrier. Further, thetoggle mechanism 30 of the switch 10 is arranged so that the operatingbuttons or rotatable lever will move to positions which indicate theswitch has responded to an excess current condition.

A means 100 for providing a switch with ajog function includes ajogselection lever 102, a spring return lever 104, and a spring 106. Thejog selection lever 102 has a portion pivotally mounted on the uppersection 12 within the cavity 32 and extends through a slot 108 in theforward wall of the upper section 12 to present a portion 110 that isexternally accessible of the housing 16. Located between the externalaccessible portion 110 and the pivot 112 for the jog selection lever 102is a pivot 114 whereon the spring return lever 104 is rotatably mounted.Positioned between a spring seat formed on the jog selection lever 102and a spring seat on the spring return lever 104 on the right side ofthe pivot 114 is the spring 106. The spring 106 is arranged toconstantly urge the spring return lever 104 in a clockwise direction ofrotation, as in FIG. 3. The rotation of the spring return lever 104 inthe clockwise direction is limited by a stop 116 on the jog selectionlever 102 which is engaged by the arm portion of the spring return leverextending to the left of the pivot 114 which is designated by a numeral118. The arm portion 118 extends to be in the path of movement of an endportion 120 on the operating lever 48 as the operating lever 48 is movedby the button 62 to the ON position when the jog selection lever 102 ispositioned as in FIG. 4. When the job selection lever 102 is moved in asecond position in slot 108, as shown in FIG. 5, the means providing theswitch 10 with ajog function will be inoperative as the arm 118 will beout of the path of movement ofend 120. When the jog selection lever 102is positioned as shown in FIG. 4, and the button 62 is depressed to movethe components of the switch 10 to an ON position, the movement of theend 120 will engage the arm 118 and cause the spring return lever 104 torotate in a counterclockwise direction against the force supplied by thespring 106. As was previously described, when the toggle mechanism 30 ispositioned in the ON position, the toggle spring 52 will cause the pins68 and 78 to be positioned below the centerline 76 so that the togglemechanism is maintained in the ON circuit closing position. The spring106 is selected to have a force which exceeds the force supplied by thetoggle spring 52. Thus when the manual force required to depress thebutton 62 is removed, the spring 106 will cause the spring return lever104 to rotate in a clockwise direction and thereby move the operatinglever 48 from the ON position shown in FIG. 4 to the OFF position asillustrated by FIG. 5. The movement of the pin 68 which accompanies themovement of the operating lever 48 to the OFF position will cause thetoggle spring 52 to move the toggle lever 46 to the OFF position as hasbeen previously described. Thus when the means which provided the switchwith a jog function is in an operative position, as illustrated in FIG.4, the depression of the button 62 to move the toggle mechanism 30 to anON position will cause the toggle mechanism 30 to remain in the ONposition as long as a manual force is applied to the button 62. Uponremoval of the manual force on the button 62, the means 100 willautomatically return the toggle mechanism 30 and the button 62 to an OFFposition as has been previously described.

While certain preferred embodiments of the invention have beenspecifically disclosed, it is understood that the invention is notlimited thereto, as many variations will be readily apparent to thoseskilled in the art and the invention is to be given its broadestpossible interpretation within the terms of the following claims.

What I claim is:

1. In an electric switch, the combination comprising: a switch housingproviding an internal cavity, a contact carrier movable along a linearpath within the cavity between a contact opening and a contact closingposition, resilient means constantly urging the carrier to the contactopening position, a toggle mechanism within the cavity, said togglemechanism including an operating lever, means providing access to theoperating lever from the exterior of the housing for moving theoperating lever about a main pivot between an OFF position and an ONposition when a manual force is applied through the means to theoperating lever from the exterior of the housing, a toggle leverrotatable about an auxiliary pivot between a deactivated position and anactivated position, said toggle lever having a portion engaging thecontact carrier for moving the carrier from the contact opening positionto the contact closing position when the toggle lever is moved from thedeactivated position to the activated position, and a toggle springhaving its opposite ends connected between the operating lever and thetoggle lever, said toggle spring providing a connection between theoperating lever and the toggle lever for moving the toggle lever with anovercenter toggle action between its deactivated and activated positionswhen the operating lever is moved respectively between its OFF and ONpositions and for maintaining the toggle lever and the operat ing leverrespectively in the deactivated position and the OFF position when theoperating lever is manually moved to the OFF position and the manuallyapplied force on the operating lever is removed and for maintaining thetoggle lever and the operating lever respectively in the activatedposition and the ON position when the operating lever is manually movedto the ON position and the manually applied force is removed, and ameans providing the switch with a jog function, said jog .providingmeans including a jog lever having a portion pivotally mounted withinthe cavity and a portion extending external of the housing forselectively moving portions of the jog lever to two positions within thecavity, and a resilient means carried by said portion of the jog leverwithin the cavity to engage portions of the operating lever when the joglever is in one selected position for supplying a force forautomatically moving the operating lever and the toggle leverrespectively to the OFF position and the deactivated position when theoperating lever is in the ON position and the manually applied force onthe operating lever is removed.

2. The combination as recited in claim 1 wherein the resilient meanscarried by the jog lever includes a spring return lever that isrotatably mounted on the portion of the jog lever within the cavity, astop carried by said portion of the jog lever for limiting the rotationof the spring return lever in one direction and a spring having itsopposite ends reacting between the jog lever and the spring return leverproviding a force for constantly urging the spring return lever in saidone direction of rotation. v

3. The combination as recited in claim 2 wherein the spring return leverincludes a portion that is aligned to be engaged by portions of theoperating lever when the jog lever is at a first of said two positionsand the operating lever is moved to the ON position and to be out of thepath of movement of said operating lever when the jog lever is at asecond of said two positions.

4. The combination as recited in claim 3 wherein the spring return leverincludes a portion that is engageable with portions of the operatinglever for preventing the jog lever from being moved from the secondposition to the first position when the operating lever is at the ONposition.

5. The combination as recited in claim 4 wherein the operating lever andthe toggle lever move in parallel planes and the jog lever is movable ina plane that is perpendicular to the parallel planes.

6. The combination as recited in claim 1 wherein the operating lever andthe toggle lever move in parallel planes and the jog lever is movable ina plane that is perpendicular to the parallel planes.

7. The combination as recited in claim 5 wherein the toggle spring hasan end connected to an end portion of the operating lever and the springreturn lever has a portion engageable with the end of the operatinglever to which the toggle spring is connected.

252 2 3 UNITED STATES PATENTIYOFFICE CERTIFICATE OF CORRECTION PatentNo. 3,59 ,7 Dated uly 6, 1971 Inventor(s) Jordan P11 132 It is certifiedthat error appears in the above-identified patent and that said LettersPatent are hereby corrected as shown below:

Iitle Page, in the title, for "JOB" read --JOG--; in the abstrac z,

line 13, for "contact" read --contacts.

C01. 1, line 2, for "JOB" read --JOG--.

Col. 2, line 3, after "operated" insert --switch, such as a manuallyoperated-.

C01. 3, true line 30 (appearing as line 31), for "portion" read--portions--; true line 70 (appearing as line 72) after "center" insert--of the-- 001. 4, true lines 50, 6 and 70 (appearing as "lines 52, 66and 72) each occurrence, for "bright" read -bight.

C01. 6, true line 29 (appearing as line 30), for "provided" read--provides--.

Signed and sealed this l th day of January 1972.

(SEAL) Attest:

EDWARD M.FLETCHER, JR. ROBERT GOTTSCHALK Attesting Officer ActingCommissioner of Patents

1. In an electric switch, the combination comprising: a switch housingproviding an internal cavity, a contact carrier movable along a linearpath within the cavity between a contact opening and a contact closingposition, resilient means constantly urging the carrier to the contactopening position, a toggle mechanism within the cavity, said togglemechanism including an operating lever, means providing access to theoperating lever from the exterior of the housing for moving theoperating lever about a main pivot between an OFF position and an ONposition when a manual force is applied through the means to theoperating lever from the exterior of the housing, a toggle leverrotatable about an auxiliary pivot between a deactivated position and anactivated position, said toggle lever having a portion engaging thecontact carrier for moving the carrier from the contact opening positionto the contact closing position when the toggle lever is moved from thedeactivated position to the activated position, and a toggle springhaving its opposite ends connected between the operating lever and thetoggle lever, said toggle spring providing a connection between theoperating lever and the toggle lever for moving the toggle lever with anovercenter toggle action between its deactivated and activated positionswhen the operating lever is moved respectively between its OFF and ONpositions and for maintaining the toggle lever and the operating leverrespectively in the deactivated position and the OFF position when theoperating lever is manually moved to the OFF position and the manuallyapplied force on the operating lever is removed and for maintaining thetoggle lever and the operating lever respectively in the activatedposition and the ON position when the operating lever is manually movedto the ON position and the manually applied force is removed, and ameans providing the switch with a jog function, said jog providing meansincluding a jog lever having a portion pivotally mounted within thecavity and a portion extending external of the housing for selectivelymoving portions of the jog lever to two positions within the cavity, anda resilient means carried by said portion of the jog lever within thecavity to engage portions of the operating lever when the jog lever isin one selected position for supplying a force for automatically movingthe operating lever and the toggle lever respectively to the OFFposition and the deactivated position when the operating lever is in theON position aNd the manually applied force on the operating lever isremoved.
 2. The combination as recited in claim 1 wherein the resilientmeans carried by the jog lever includes a spring return lever that isrotatably mounted on the portion of the jog lever within the cavity, astop carried by said portion of the jog lever for limiting the rotationof the spring return lever in one direction and a spring having itsopposite ends reacting between the jog lever and the spring return leverproviding a force for constantly urging the spring return lever in saidone direction of rotation.
 3. The combination as recited in claim 2wherein the spring return lever includes a portion that is aligned to beengaged by portions of the operating lever when the jog lever is at afirst of said two positions and the operating lever is moved to the ONposition and to be out of the path of movement of said operating leverwhen the jog lever is at a second of said two positions.
 4. Thecombination as recited in claim 3 wherein the spring return leverincludes a portion that is engageable with portions of the operatinglever for preventing the jog lever from being moved from the secondposition to the first position when the operating lever is at the ONposition.
 5. The combination as recited in claim 4 wherein the operatinglever and the toggle lever move in parallel planes and the jog lever ismovable in a plane that is perpendicular to the parallel planes.
 6. Thecombination as recited in claim 1 wherein the operating lever and thetoggle lever move in parallel planes and the jog lever is movable in aplane that is perpendicular to the parallel planes.
 7. The combinationas recited in claim 5 wherein the toggle spring has an end connected toan end portion of the operating lever and the spring return lever has aportion engageable with the end of the operating lever to which thetoggle spring is connected.